Network engineer looking for a whiteboard app with image/stencil support

I am a network engineer looking for a whiteboard app that has support for either stencils or images I can load into the app. This is for presentations and sometimes quick sketches with co-workers.
The reason I am looking for stencil support is network diagrams with poorly drawn routers/switches can really muddy up the entire presentation. An example of what a network topology looks like for reference.
[https://i.imgur.com/npLsNcf.png](https://i.imgur.com/npLsNcf.png)
It would be nice to just drag an image/stencil over and start drawing. I was looking into the two most popular note taking apps, Notability and Goodnotes if they support such a feature or at least close to it.
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